ai·ki·do 
(īkē-dō′, ī-kēdō)
(īkē-dō′, ī-kēdō)n.
A Japanese art of self-defense that employs holds and locks and that uses the principles of nonresistance in order to debilitate the strength of the opponent.
[Japanese aikidō : ai, meeting, matching, verbal noun of au, to meet, match + ki, spirit (from Middle Chinese khi`; see CHI2) + dō, art (from Early Middle Chinese daw').]